mushroom health benefits

Medicinal values of Mushroom

Introduction

• Fleshy, spore-bearing fruiting body of a fungus

• Produced on soil surface

• Mostly in forests

• “Food of gods” by the Romans

• Delicious, nutritious & medicinal source

• shiitake (Lentinula edodes), one of the earliest species

• Production of mushroom in Nepal during 2070/71 B.S. was 1, 675 ton

(MOAD, 2073)

Mushroom as a nutritional sourceProtein

• digestibility of mushroom protein to be as high as 72 to 83%

• Protein content depends on the composition of the substratum, size of pileus, harvest time and species of mushrooms

• 46.5% protein on dry weight basis in Agaricus bisporus

• 30.16, 28.16, 34.7 and 29.16% protein in dried mycelium of A. campestris, Agaricus arvensis, M. esculenta and Morchella deliciosa respectively

• On a dry weight basis, mushrooms normally contain 19 to 35% proteins as compared to 7.3% in rice, 12.7% in wheat, 38.1% in soybean and 9.4% in corn

• Mushrooms contain all the essential amino acids required by an adult

Mushroom as a nutritional sourceCarbohydrate

• 50 to 65% on dry weight basis

• Free sugar (Mono & disaccharides) Free sugars amounts to about 11%

• Mannitol, 80% of the total free sugar

(used as sweetener for diabetic patient diet)

• Raffinose, sucrose, glucose, fructose and xylose are dominant in Agaricus bisporus

• Water soluble polysaccharides of mushrooms are antitumor

Mushroom as a nutritional sourceFat

• fat content is very low, dominated by unsaturated fatty acids

• 2.04% in Suillus granulatus, 3.66% in Suillus luteus and 2.32% in A. campestris

• rich in linolenic acid, essential fatty acid

Mushroom as a nutritional sourceVitamins

• Mushrooms are one of the best sources of vitamins especially Vitamin B

• wild mushrooms contains much higher amounts of vitamin D2 than dark cultivated A. Bisporus

• Mushrooms also contain vitamin C in small amounts

• poor in vitamins A, D, and E

Mushroom as a nutritional sourceMinerals

• Major mineral constituents in mushrooms are K, P, Na, Ca, Mg

• Cu, Zn, Fe, Mo, Cd form minor constituents

• K, P, Na and Mg constitute about 56 to 70% of the total ash content of the mushrooms

• Mushrooms have been found to accumulate heavy metals like cadmium, lead, arsenic, copper, nickel, silver, chromium and mercury

• The mineral proportions vary according to the species, age, the diameter of the fruiting body, type of the substratum,

• mineral content of wild edible mushrooms has been found higher than cultivated ones

Medicinal values of Mushroom

• used in medicine since the Neolithic and Paleolithic eras

• mushrooms as medicine have been used in China since 100 A.D.

• possess anti-allergic, anticholesterol, anti-tumor and anti-cancer properties

• have been used in health care for treating simple and age old common diseases like skin diseases to present day complex and pandemic disease like AIDS

• . The main components proved to be polysaccharides especially β–D-glucans, isolated from the shiitake fruiting bodies, an antitumor polysaccharide, which was named lentinan.

• mushrooms cure epilepsy, wounds, skin diseases, heart ailments, rheumatoid arthritis, cholera besides intermittent fevers, diaphoretic, diarrhea, dysentery, cold, anesthesia, liver disease, gall bladder diseases and used as vermicides.

• In underdeveloped countries where protein malnutrition has taken epidemic proportions, Food and Agricultural Organization (F. A. O.) has recommended mushroom foods to solve the problem of malnutrition

• Mannentake (Ganoderma lucidum) are known to lower blood pressure and serum cholesterol concentration of hypertensive rats

• . Lentinus tigrinus and G. lucidium are proved anticholesterolmic

• Lentinus edodus has been used to enhance vigour, sexuality, energy and as an anti-aging agent

• Lentinan sulphate obtained from Lentinus species inhibits HIV, regression of the disease state

• Maitake extract has been shown to kill HIV and enhance the activity of T-helper cells

• Ganoderma nutriceuticals have exhibited promising antiviral effects like, anti-hepatitis B (Kino, K.Y. et al., 1989), anti-HIV

• mushrooms like reishi, cordyceps, enoki, maitake, lion’s mane and splitgill for cancer treatment, asthma and allergy treatment

• Pleurotus tuber-regium mushroom have been used for curing headache, high blood pressure, smallpox, asthma, colds and stomach ailments

• P. sajor-caju has been found to be inductive for growth of probiotic bacteria

• Cordyceps sinensis also treated as half caterpillar and half mushroom has been known and used for many centuries in traditional Chinese medicine

• Cordyceps has been used to induce restful sleep, acts as anticancer, antiaging, and antiasthma agents besides proved effective for memory improvement and as sexual rejuvenator

• PSK, an anticancer drug from the mushroom (PSK is a polysaccharide complex with immune stimulating effects)

Antioxidant activity of mushroom

• Antioxidants are chemical compounds that protect cells from the damage caused by unstable molecules known as free radicals

• capable of randomly damaging all components of the body, viz. lipids, proteins, DNA, sugars and are involved in mutations and cancers

• Over production of free radicals creates oxidative stress

• Waxy cap mushroom extracts (Hygrocybe coccinea) are inhibitory to sarcoma (cancer grows in connective tissue)

• Immunoceticals isolated from more than 30 mushroom species have shown anticancer action in animals

• Schizophyllan from Schizophyllum commune is effective against head and neck cancer

• Tyrosinase from A. bisporus is antioxidant

• Camptothecin is responsible for antioxidant properties in G. lucidum